摘要
研究纳米石墨烯片(GnPs)或氧化石墨烯(GO)掺杂高延性水泥基复合材料(SHCC)的拉伸力学性能、导电性和拉伸机敏性。研究表明,当GnPs掺量低于0.8%时,GnPs-SHCC的拉伸强度高于SHCC,但对延性的影响不大。GnPs的掺入提高了材料的导电性,但在拉伸时电阻变化的灵敏度系数降低。GO在较小的掺量下(0~0.05%),与未掺加GO的SHCC相比GO-SHCC的拉伸强度和延性降低,但其对拉应变的敏感性提高,GOSHCC的灵敏度系数为SHCC的8~9倍。
The tensile mechanical properties,electrical conductivity and tensile strain self-sensing properties of strain hardening cement-based composites (SHCC) containing graphene nanoplatelets (GnPs) or graphene oxide (GO) were investigated in this paper. Results show that when the content of GnPs was less than 0.8% , tensile strength of GnPs-SHCC was higher than that of conventional SHCC, but GnPs showed little influence on duc-tility. Electrical conductivity of GnPs-SHCC increased with the increasing contents of GnPs, but the gauge fac-tor decreased. Although GO with small contents of 0-0.05% was used, tensile strength and ductility of G〇-SHCC both decreased obviously, while the gauge factor of that increased by 8-9 times.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2017年第7期7124-7129,共6页
Journal of Functional Materials
基金
湖北省自然科学基金资助项目(2014CFB866)
河北省百人计划资助项目(E2014100003)
关键词
高延性
水泥基复合材料
石墨烯
电阻率
自感知
high-ductility
cement-based composites
graphene
resistivity
self-sensing